Concentration-dependent luminescence and energy transfer of flower-like Y2(MoO4)3:Dy3+ phosphor
Concentration-dependent luminescence and energy transfer of flower-like Y2(MoO4)3:Dy3+ phosphor
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DOI：
10.1016/j.jallcom.2011.03.034
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发表时间：
2011-05-19
影响因子：
6.2
通讯作者：
Meng, Qingyu
中科院分区：
文献类型：
--
作者：
Tian, Yue;Chen, Baojiu;Meng, Qingyu
采用β-环糊精辅助共沉淀法合成了Y-2（MoO 4）（3）：Dy ~（3+）花状荧光粉。采用X射线衍射（XRD）和场发射扫描电子显微镜（FE-SEM）分别对样品的晶体结构和形貌进行了表征。通过荧光光谱研究了荧光粉的激发和发射特性。分析了Dy 3+掺杂浓度对样品色坐标的影响。根据Huang理论、I-H模型和货车Uitert模型研究了Dy ~（3+）离子间的能量传递机理。这三条途径同时表明，Dy 3+离子间的电偶极-偶极相互作用是Dy 3+离子间能量传递的主要物理机制。(C)2011年爱思唯尔B。V.保留所有权利。
Flower-like Y-2(MoO4)(3):Dy3+ phosphors have been synthesized via a co-precipitation approach with the aid of beta-cyclodextrin. The crystal structure and morphology of the phosphors were characterized by XRD (X-ray diffraction) and FE-SEM (field emission scanning electron microscopy), respectively. The excitation and emission properties of the phosphors were examined by fluorescence spectroscopy. The dependence of color coordinates on the Dy3+ doping concentration was analyzed. The energy transfer mechanism between Dy3+ ions was studied based on the Huang's theory, I-H and Van Uitert's models. It was concluded simultaneously from these three routes that the electric dipole-dipole interaction between Dy3+ ions is the main physical mechanism for the energy transfers between Dy3+. (C) 2011 Elsevier B. V. All rights reserved.